/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hylanda.processors.getdomainname;

import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.flowfile.attributes.CoreAttributes;
import org.apache.commons.io.IOUtils;
import org.apache.nifi.annotation.behavior.ReadsAttribute;
import org.apache.nifi.annotation.behavior.ReadsAttributes;
import org.apache.nifi.annotation.behavior.WritesAttribute;
import org.apache.nifi.annotation.behavior.WritesAttributes;
import org.apache.nifi.annotation.lifecycle.OnScheduled;
import org.apache.nifi.annotation.documentation.CapabilityDescription;
import org.apache.nifi.annotation.documentation.SeeAlso;
import org.apache.nifi.annotation.documentation.Tags;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessContext;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.ProcessorInitializationContext;
import org.apache.nifi.processor.Relationship;
import org.apache.nifi.processor.util.StandardValidators;

import com.alibaba.fastjson.JSONObject;
import com.hylanda.processors.getdomainname.util.GenUrlCrc64;
import com.hylanda.processors.getdomainname.util.GetDomainNameUtil;
import com.hylanda.processors.getdomainname.util.NifiUtil;

import java.io.BufferedOutputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;

@Tags({ "domain" })
@CapabilityDescription("获取主域名")
@SeeAlso({})
@ReadsAttributes({ @ReadsAttribute(attribute = "", description = "") })
@WritesAttributes({ @WritesAttribute(attribute = "", description = "") })
public class GetDomainNameProcessor extends AbstractProcessor {

	
	public static final PropertyDescriptor URL_FIELDS = new PropertyDescriptor.Builder().name("URL_FIELDS")
			.displayName("url所在的字段,多个用逗号分开").description("url fileds").required(true).addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
			.build();
	

	public static final Relationship SUCCESS = new Relationship.Builder().name("SUCCESS").description("SUCCESS")
			.build();
	public static final Relationship FAILURE = new Relationship.Builder().name("FAILURE").description("FAILURE")
			.build();

	private List<PropertyDescriptor> descriptors;

	private Set<Relationship> relationships;

	@Override
	protected void init(final ProcessorInitializationContext context) {
		final List<PropertyDescriptor> descriptors = new ArrayList<PropertyDescriptor>();
		
		descriptors.add(URL_FIELDS);
		this.descriptors = Collections.unmodifiableList(descriptors);

		final Set<Relationship> relationships = new HashSet<Relationship>();
		relationships.add(SUCCESS);
		relationships.add(FAILURE);
		this.relationships = Collections.unmodifiableSet(relationships);
	}

	@Override
	public Set<Relationship> getRelationships() {
		return this.relationships;
	}

	@Override
	public final List<PropertyDescriptor> getSupportedPropertyDescriptors() {
		return descriptors;
	}

	@OnScheduled
	public void onScheduled(final ProcessContext context) {

	}

	@Override
	public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
		FlowFile flowFile = session.get();
		if (flowFile == null) {
			return;
		}
		String content = NifiUtil.getContent(session, flowFile);
		String urlFields = null;
		try {
			urlFields = context.getProperty(URL_FIELDS).getValue().trim();
		} catch (Exception e) {
			// TODO: handle exception
		}
		if (null==urlFields||urlFields.equals("")) {
        	flowFile = session.write(flowFile, (in, out) -> {
				try (OutputStream outputStream = new BufferedOutputStream(out)) {				
					outputStream.write(IOUtils.toByteArray("url所在的字段不能为空"));
				}
			});
        	session.transfer(flowFile, FAILURE);
			return;
		}
		urlFields = urlFields.replace("，", ",");
		String[] fields = urlFields.split(",");
		
		JSONObject jsonObject = JSONObject.parseObject(content);
		String url = null;
		String domainName = null;
		for (int i = 0; i < fields.length; i++) {
			url = jsonObject.getString(fields[i]);
			if (url==null||"".equals(url)) {
				continue;
			}
			domainName = GetDomainNameUtil.getDomainName(url);
			jsonObject.put(fields[i]+"domainName", domainName);
		}
		
		
	
		
		//String result = HTTPPost.getTextFromImage(imageUrl, modeint,ak,sk);
		flowFile = session.write(flowFile, (in, out) -> {
			try (OutputStream outputStream = new BufferedOutputStream(out)) {
				outputStream.write(IOUtils.toByteArray(jsonObject.toJSONString()));
			}
		});

		String uuid = GenUrlCrc64.GenCrc64(UUID.randomUUID().toString());
		String session_id = flowFile.getAttribute(CoreAttributes.UUID.key());
		String instance_id = getIdentifier();
		JSONObject logJSON = new JSONObject();
		JSONObject msgJSON = new JSONObject();

		Date date = new Date();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String time = sdf.format(date);
		msgJSON.put("time", time);
		msgJSON.put("status", "success");

		logJSON.put("msg", msgJSON);
		logJSON.put("session_id", session_id);
		logJSON.put("uuid", uuid);
		logJSON.put("instance_id", instance_id);

		getLogger().info(logJSON.toJSONString());
		session.transfer(flowFile, SUCCESS);
	}
}
